P

Inventor

PORTZ HEINZ

DE4 patents
⚠️ This page may combine multiple inventors who share the name “PORTZ HEINZ”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

COLLARDIN GMBH GERHARD

3 patents
US4775427AOct 4, 1988

Phosphate conversion coatings for composite metals

COLLARDIN GMBH GERHARD23 citations73
US4680064AJul 14, 1987

Phosphate conversion coating accelerators

COLLARDIN GMBH GERHARD14 citations67
US4707193ANov 17, 1987

Method for activating metal surfaces prior to zinc phosphation

COLLARDIN GMBH GERHARD4 citations59

HENKEL KGAA

1 patent
US4600447AJul 15, 1986

After-passivation of phosphated metal surfaces

HENKEL KGAA8 citations70